xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/spi/atmel,at91rm9200-spi.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
# Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries
%YAML 1.2
---
$id: http://devicetree.org/schemas/spi/atmel,at91rm9200-spi.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Atmel SPI device

maintainers:
  - Tudor Ambarus <tudor.ambarus@linaro.org>

allOf:
  - $ref: spi-controller.yaml#

properties:
  compatible:
    oneOf:
      - const: atmel,at91rm9200-spi
      - items:
          - const: microchip,sam9x60-spi
          - const: atmel,at91rm9200-spi
      - items:
          - const: microchip,sam9x7-spi
          - const: microchip,sam9x60-spi
          - const: atmel,at91rm9200-spi

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clock-names:
    contains:
      const: spi_clk

  clocks:
    maxItems: 1

  dmas:
    items:
      - description: TX DMA Channel
      - description: RX DMA Channel

  dma-names:
    items:
      - const: tx
      - const: rx

  atmel,fifo-size:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: |
      Maximum number of data the RX and TX FIFOs can store for FIFO
      capable SPI controllers.
    enum: [ 16, 32 ]

required:
  - compatible
  - reg
  - interrupts
  - clock-names
  - clocks

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/gpio/gpio.h>
    #include <dt-bindings/interrupt-controller/irq.h>

    spi1: spi@fffcc000 {
        compatible = "atmel,at91rm9200-spi";
        reg = <0xfffcc000 0x4000>;
        interrupts = <13 IRQ_TYPE_LEVEL_HIGH 5>;
        #address-cells = <1>;
        #size-cells = <0>;
        clocks = <&spi1_clk>;
        clock-names = "spi_clk";
        cs-gpios = <&pioB 3 GPIO_ACTIVE_HIGH>;
        atmel,fifo-size = <32>;

        mmc@0 {
            compatible = "mmc-spi-slot";
            reg = <0>;
            gpios = <&pioC 4 GPIO_ACTIVE_HIGH>;    /* CD */
            spi-max-frequency = <25000000>;
        };
    };